Swimming capsule endoscope using static and RF magnetic field of MRI for propulsion

—Capsule endoscopy is a promising technique for diagnosing diseases in the small intestines. Here we propose a miniature swimming mechanism that uses MRI’s magnetic fields for both propulsion and wireless energy delivery. Our method uses both the static and radio frequency (RF) magnetic field inherently available in MRI to generate propulsion force. The propulsion force is produced by a swimming tail containing waving beam consisting of three coils in a row. Alternating current in the coils acting on the static magnetic field of the MRI will generate waving movement to produce a propulsion force. RF magnetic field will provide power to generate the alternating currents in the coils. We developed a theoretical model to predict sinusoidal waves produced by the waving beam using the Euler-Bernoulli beam equation and multipleinput multiple-output system were solved using antenna design theory. This numerical model predicted that the maximal propulsion from a 10 mm long tail can produce...

• Type: Conference
• Year: 2008
• Where: ICRA
• Authors: Gabor Kosa, Peter Jakab, Ferenc A. Jolesz, Nobuhiko Hata
• Keywords: ICRA 2008, Magnetic Field, Propulsion Force, Robotics, Static Magnetic Field